Tignor, R. (2008). Worlds Together, Worlds Apart: A History of the World. McGraw - HillCompanies, Inc.
Čikaški stil citiranjaTignor, Robert. Worlds Together, Worlds Apart: A History of the World. McGraw - HillCompanies, Inc, 2008.
MLA način citiranjaTignor, Robert. Worlds Together, Worlds Apart: A History of the World. McGraw - HillCompanies, Inc, 2008.
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